MacViews: All targets compile. Fixes unit_tests and message_center_unittests

ui/views/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("views.gyp") ],
@@ skipping 100 matching lines @@
     "//base",
     "//ipc:test_support",
     "//skia",
     "//testing/gtest",
     "//ui/aura",
     "//ui/base",
     "//ui/compositor",
     "//ui/compositor:test_support",
     "//ui/events",
     "//ui/events:events_base",
+    "//ui/events:test_support",
     "//ui/events/platform",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/wm",
   ]
 
   if (is_chromeos) {
     sources -= [
       "test/ui_controls_factory_desktop_aurax11.cc",
       "test/ui_controls_factory_desktop_aurax11.h",
@@ skipping 112 matching lines @@
       "//testing/gtest",
       "//ui/aura",
       "//ui/compositor",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
       "//ui/wm",
     ]
   }
 }